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Performance Pillow Bundle

Get double the comfort and save 15% with our Performance Pillow Bundle that includes two UltraCool Pillows and a set of Performance Pillow Covers. The UltraCool Pillow incorporates temperature-regulating technology from our bedding into a pillow, featuring NASA-engineered fabric and Polysilk™ down-alternative fiberfill to provide a comfortable place for your head. Top it off with the Performance Pillow Covers, which are incredibly lightweight and airy, keeping your pillows cool without altering their feel.

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The perfect pair. Take the comforting support of a UltraCool pillow and upgrade its temperature-regulation capabilities with the Performance Pillow Covers so you never have to flip to the cool side.

Slumber Cloud Icon NASA EngineeredPremium NASA-engineered Outlast® fabric in both products fights off heat

Slumber Cloud Icon Sets SizeIncludes 2 UltraCool Pillows & a Set (2) of Performance Pillow Covers

Slumber Cloud Icon Oeko-TexOeko-Tex Standard 100 Certified Technology

Detailed view of the side zipper of the Slumber Cloud Performance Pillow Cover with the UltraCool Pillow inside

The reviews are in.

Coolest pillow ever!

"This truly is the best pillow I have ever used, and I highly recommend it to anyone who wants a pillow that stays cool."

John G.

I am in love with this pillow.

"It just wraps perfectly for a restful sleep. I can't say enough, it's just right for me. Not hot, nor does it go flat or hard. It is very well made."

Carol M.

Decadent and luxurious pillows!

"I must say I am no longer tossing and turning throughout the night as I did before. I love how these pillows stay cool all night long too! I'm beyond thrilled."

Rae G.

Just the right fit for me.

"Very comfortable support and YES it actually keeps my head COOL!!! So cool!"

Kathleen C.

Pillow paradise.

"I already bought one, loved it so much. I bought the second one to stack up upon the first pillow."

Andrea M.

Why we're different.

Traditional bedding and moisture wicking technologies react to changes in your body temperature while you sleep. Slumber Cloud is doing something different. Slumber Cloud Bedding utilizes Outlast® technology for an unmatched approach to temperature regulation. Outlast® technology is proactive, not reactive. As your body temperature increases during sleep, Outlast® technology stores that heat to keep you cool, and then releases it as you cool down...keeping you feeling “just right”.

Infographic image of how Outlast Technologies temperature regulation works. Creating a comfort zone to help prevent you from being too hot or too cold.

Our premium lining fabric takes a proactive approach by employing active temperature control properties, versus other "cooling" bedding that is moisture-wicking and simply reactive.

Two Slumber Cloud Performance Pillow Bundle pillows stacked on each other

Outlast® materials improve comfort for: Anyone looking for a more comfortable night’s sleep - they’ll sleep cooler and more comfortably. Sleepers who struggle with hot flashes and night sweats - proactive temperature regulation means they’ll sleep cooler and drier and wake up feeling refreshed. Thermally incompatible couples - individuals can sleep at their own ideal temperature.

A man holding a Slumber Cloud UltraCool Pillow and laughing while a woman holds fiber filling over his head and laughing

We pass on everything we learn to our customers. From sleep studies to new technologies, we want to help you make informed decisions about your sleep.

Click to learn more about our studies: Heat Sleep Study Humidity Sleep Study

A woman lying in bed and clutching a Slumber Cloud UltraCool Pillow

The thoughtfulness is in the details.

It doesn’t stop at thread count. It’s the little things, the thoughtful details, that make our products the best available.

Two Firmness Levels

Two firmness levels allow for perfect neck support

Manages Heat

Designed to manage heat through your pillowcase

Easy to Care For

Just throw it in your home washing machine

Most frequently asked questions.

I sleep hot, my partner sleeps cold. Is this going to work for us?

Definitely! When you sleep hot but your partner sleeps cold we refer to this as being “thermally incompatible”. Our bedding is designed to automatically adjust to each sleeper’s ideal sleep temperature. With the unique ability to react to each sleeper's temperature independently, our bedding ensures that both you and your partner will sleep comfortably all night long.

How does the technology in the bedding work?

Outlast® technology is made of a unique material that can absorb, store and release excess heat. As an individual’s skin temperature increases, the technology will absorb that excess heat to help reduce overheating. The material will store the excess heat until the skin temperature begins to drop. When this occurs, the stored heat is released back to the individual to prevent chill. By managing the build-up of heat and moisture under the covers, Outlast® technology helps keep you at a comfortable temperature so you sleep “just right.”

How many degrees cooler will this keep me?

Slumber Cloud products are designed to help manage heat and humidity build up. It is not an air conditioner with a set temperature degree, but it will react to your temperature all night long to reduce heat build up and manage temperature swings.

What's the difference between Slumber Cloud bedding and other "cooling" bedding I might have tried?

Slumber Cloud takes a proactive approach to temperature control by absorbing and storing excess heat when temperatures are too warm and releasing heat when temperatures are too cold. This approach is different than most other "cooling" bedding technologies/products on the market that are moisture-wicking (ex. Bamboo & Eucalyptus). Moisture-wicking is a reactive approach because it doesn't start to cool you down until you build up sweat and moisture and then wicks it off of you. Our products are designed to prevent you from ever getting to the point of sweating and building up moisture.

I need a new pillow, what firmness is best for me?

Pick your firmness based on your typical sleeping position. The soft-medium pillow offers the perfect support for those that prefer to sleep on their stomach and back. The medium-firm pillow is recommended for those who regularly sleep on their side and back.

Can I put a pillowcase over my pillow?

Yes, we want your bed to look nice and match the rest of your linens so we made sure the technology inside our pillows will still work even when used with a pillowcase.

Which one is cooler, the UltraCool or Core pillow?

True to its name, the UltraCool pillow is going to be the "cooler" of the two pillow options. Although you will still get great temperature control with the Core Pillow, this is designed more for sleepers who would prefer a traditional pillow with a modern temperature-regulation technology added in.

Is this machine washable?

Yes! Just like traditional bedding, Slumber Cloud products are designed to be washed and dried in your home washer and dryer. Please carefully follow the care instructions on the tag of your products.

Can I use an iron on my bedding?

The technology in our bedding is sensitive to high heats - instead of ironing we recommend using a wrinkle release spray such as Iron In a Bottle for that crisp and finished look.

How do I sanitize my bedding?

Although we recommend against using high heat when washing your bedding there are products that can help with sanitizing your bedding. Here are a few of our favorites: Dropps & Tide

How should I remove stains?

Please refrain from using harsh chemicals such as bleach and oxiclean on your bedding. Instead opt for more natural alternatives such as a small amount of dish soap, a warm water & vinegar solution, or specialty formulated laundry detergent such as Dropps

How do I wash my Performance Pillow Bundle?

To wash your pillow, please follow the washing instructions on the tag. If you have cut your tags after purchase, it is recommended to wash with Slumber Cloud Free & Clear Laundry Detergent or a mild detergent in cold water on a delicate spin cycle. Keep the heat on low and don't use an auto-dry setting. The sensors in your high-tech dryer will only detect surface dryness, so your pillows will almost certainly still be holding water at the end. Before putting them in the dryer you will want to make sure that the fill in the pillows hasn't gone all to one end of the encasement. Also remember to spread out the fill (fluff them), two or three times during drying. One of our favorite tricks for washing your pillows is tennis balls or shoes. Grab a few clean tennis balls and throw them in the dryer with your pillows. As they bounce around your dryer they will fluff your pillows and keep the fill from bunching up. This also leads to a more consistent dryness throughout the cushion and shorter drying times. If you are looking for something a little more refined than tennis balls or shoes, you can find products called dryer balls that are often made of wool or a synthetic material that do the exact same thing. Just try to get ones that are heavy enough to fluff your pillows while they dry.

Does Free Shipping Apply To International Orders?

Free shipping is only valid for US and Armed Forces delivery addresses. However, we do offer discounted shipping rates to Canada addresses.

Do you ship internationally?

Currently, we only ship internationally to Canada. At the time of purchase we include the cost of shipping, taxes, and duties for Canadian shipments. No additional fees will incur at delivery, but if they do please contact our customer service team at to take care of the issue. For all other countries, if you find a forwarder or have a friend or family member here in the states, we would be more than happy to work with you to get it there.

Can I still return an item even if it's been washed?

We accept returns in any condition within 60 days of purchase! We want you to absolutely love your new bedding, so if you wash an item, try it out, and decide it's just not for you, we can definitely still initiate a return. Please note we do our very best to donate all returns to local charities instead of a landfill. We appreciate your help in this process by washing any used items before returning them to us.

Are shipping fees covered for returns?

All shipping fees for domestic returns are completely free! When you initiate a return through our returns platform, you will receive a prepaid shipping label to get the item back to us. If you live outside the US and are looking to initiate a return, please check out the return policy in the International FAQs.

How do I initiate a return?

If you're looking to initiate a return, just head over to our returns page! Please note that we are not able to process returns for items listed as Final Sale or past the 60 day return period.

What is your return policy?

Bedding: All bedding products, excluding “Final Sale” items, come with a 60-Day Satisfaction Guarantee. Sleep on it, wash it, and really test it out - If you are not fully satisfied with your new bedding you can return the item(s) within 60 days of your purchase date, no questions asked. A refund will be issued, within 7 business days of receiving the returned product.

Final Sale: Final Sale are not eligible for return, exchange, or the 60 night trial period.

Apparel & Home: Items in new and unopened condition are eligible for a return or exchange within 60 days of purchase. In the event of a return or exchange, our team will inspect the item and if determined it is new, a refund or exchange will be issued within 7 business days of receipt. If the item is in used condition, missing tags, or has been removed from the packaging, the return or exchange will be voided and the product donated to a local charity.

Are your products covered by a warranty?

Yes! All of our products are covered not only by the 60 night trial period but also a 180 day warranty which covers manufacturers defects (i.e. stitching, sizing). Please note in addition to damage caused by disregard of care instructions, temperature performance is not considered a manufacturers defect or covered by the product warranty.

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Free Shipping & Returns

All U.S. orders are shipped right to your door, free of charge.

Try it For 60 Nights

Sleep on it, wash it, and really put it to the test for two whole months! If you don’t love your new bedding, just return it for a full refund. No questions asked!

It’s bedding that keeps you warm but also cool, which sounds like magic but is just science.